[#bsl-binary_compose-2constructor]
= xref:bsl.adoc[bsl]::xref:bsl/binary_compose.adoc[binary&lowbar;compose]::binary&lowbar;compose
:relfileprefix: ../../
:mrdocs:

Create a `binary&lowbar;compose` object from the specified `fn1`, `fn2`, and `fn3` functors&period;

== Synopsis

Declared in `&lt;bslstp&lowbar;exfunctional&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
binary&lowbar;compose(
    OPERATION1 const& fn1,
    OPERATION2 const& fn2,
    OPERATION3 const& fn3);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *fn1*
| binary functor `f` in `f(g1(x), g2(x))`
| *fn2*
| unary functor `g1` in `f(g1(x), g2(x))`
| *fn3*
| unary functor `g2` in `f(g1(x), g2(x))`
|===


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